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Carburetor; Engine Speed - Craftsman 79964 Owner's Manual

9 hp mulching and bagging chipper-vacuum
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BELTREMOVALAND REPLACEMENT
WARNING:
Disconnect
the spark
plug
wire and move away from the spark plug.
Remove the plastic belt cover on the front of the
engine by removing two self-tapping
screws. Refer
to figure 19.
• Drain
the
gasoline
and oil from
the chipper-
vacuum.
• Tip the unit backward
so that
it rests
on the
handles.
Remove
the frame cover by removing
eight self-
tapping
screws
from underneath
the chi0per-
vacuum. Refer to figure 14.
Remove
the idler pulley
bracket
as follows.
See
figure 25.
• Take the tension
off the belt by pivoting
the
idler pulley toward you, and Iine up the holes in
the idler bracket assembly. Insert a nail or simi-
lar object through
the holes to hold the idler
pulley in this position.
• Remove three self-tapping
screws,
and lift off
the idler bracket assembly.
Eng
\ '
Bracket
Self-Tapping
Screws
Nail
FIGURE 25.
Remove
the hex bolt and lock washer
from the
engine pulley. See figure 25. Slip the engine pulley
off the engine shaft, and remove the belt from the
pulley.
Loosen the nut on the stop bolt until there is clear-
ance between the support bracket and the friction
wheel disc. See figure 26.
• Slip the belt between the friction wheel and friction
wheel disc. Remove and replace belt. Reassemble
following instruction in reverse order.
NOTE: The support bracket must rest on the stop bolt
after the new belt has been assembled.
Loosel
Nut
Stop Bolt
Support
Bracket
Friction
'Wheel Disc
FIGURE 26.
CARBURETORADJUSTMENT
,_
WARNING:
IF ANY ADJUSTMENTS
ARE
MADE
TO THE
ENGINE
WHILE
THE
ENGINE
IS RUNNING
(E.G. CARBURE-
TOR),
KEEP
CLEAR
OF ALL MOVING
PARTS. BE CAREFUL
OF HEATED SUR-
FACES AND MUFFLER.
The carburetor
has been pre-set at the factory
ancl
should
not require
adjustment.
However,
if your
engine does not operate
properly
due to suspecteC
carburetor
problems,
take your chipper-vacuum
to
your nearest SEARS Service Center.
ENGINESPEED
Your engine
speed
has been factory
set. Do not
attempt to increase engine speed or it may result ir
personal
injury. If you believe the engine is running
too fast or too slow, take your chipper-vacuum
to the
nearest SEARS Service Center for repair and adjust-
ment.
17

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This manual is also suitable for:

247.799640